Tension-rod for fireproof construction.



PATENTED JUNE 2, 1903.

J. B, HINGHMAN.

TENSION R OD FOR FIREPROOP CONSTRUCTION.-

APPLICATION IILED FEB. 16, 1903.

1T0 MODEL.

W1 T/VESSE 'r Rs co. mcrroumou wnmworou. av cv UNITED STATES PArENTPatented June 2 1903.

OFFICE.

JAMES B. HINCHMAN, OE DENVER, COLORADO.

SPECIFICATION formingpart o f Letters rates 1%. 729,937, aatea {Tune 2,1903.

Application filed February 16, 1903. seritiuamat'iv. a. model.) Y

T at whom, it may concern:

Be it known that I, JAMES B. HINCHMAN, a citizen of the United States ofAmerica, re: sidingat the cityof Denver, in the county of Denver andState of Colorado, have invented lowingto be a full, clear, and exactdescription of'the invention and the method'of constructing the same,reference being had to the accompanying drawings; and to the figures ofreference marked thereon, which form a part of this specification.

My invention relates to certain new and useful-improvements intension-rods,'and relates more particularly to that class employed inconnection with fireproof construction in general, with especialreferencefto fireproof floorings, ceilings, walls, tanks, beams, sewerpipe, curbs and gutters, independent artifi cial stone blocks,culv'erts, bridges, &c., and contemplates a tension-bar which shall be:comparatively inexpensive and present certain advantages which willenhance its value.

in general.

Further objects of the'invention willappearv in the followingspecification, wherein; more" specific reference to the invention willbe;

dwelt upon, though it-might be here noted that a further object residesin the formationof tongues or spurs integral'with the bodyof the bay andstruck out therefromfthe ends of these, spurs or lugs being freed fromthe body portion of the bar, providing an aperture through which thecement or other composition while in a plastic state may flow, and whenthe composition reaches its hardened state willhave connection-betweenthe mass of the composition on both sides of the bar through the mediumof that portion of the composition'which ezitends through the aforesaidopening. v

I Referring to the accompanying drawings, forming a part of thisapplication, and wherein like characters of reference indicate similarparts throughout the several views, Figure 1 is a central sectional viewthrough the ordinary and Well-known form of fireproof flooring and theceiling, well-known I-beams used in building construction beingillustrated in conjunction therewith. Fig. 2 is a latter.

like view in which the plastic composition to any particular;application of the InFig. 1 of the drawings I have illustrated myinvention as applied to the ordinary and well-known I-beams used in theconstruction of fireproof flooring and ceilings. 7o

[vided with struck-out portions which form lugs 3 'and aperture 4:,formed by displacing the metal to form these lugs, these 'lugs befingiofapproximately rectangular form and being inclined at such a ;;pitch tothe face 5 of the channel-bar as to permit the cement or othercomposition when in, a plastic state to -readily"find egress throughsaid aperture 4,

thereby forming a key between the cement disposed on opposite facesbfthe said bottom 5 of the tension-rod. These lugs maybe formed in anynumbers, noli-initation being placed upon the number employed, thelatter being optional.

Again referring to Fig. 1 of the drawings, it will be perceived that theends of the rods more readily permit these, rods tobe secured to theheads of, the I-beams and'to a certain extent precluding: anylongitudinal movementof the rods. This,-=however,,does not .2 are formedslightly hook shape, as at- 6, to 0 enter into my invention, "nord'o'esthe application of the rods "illustrated .in ,this figure forforming a base or foundation for the ceiling, the latter, as at 7,having their ends bent upward and then angularly disposed With relationto the body portion of the rod, so as to more readily conform to thebase and web of the I-beam.

It will'further be perceived from Figs. 1 and 2 of. the drawings thatthe lugs or spurs are disposed in different planes, the lugs or spursextendingin one plane being in staggered relation to those extending inthe opposite plane, and in Fig.4 of the drawings it will be perceivedthat I form on the rod lugs which are struck out from the bottom of thetensionrod, those to one side of the approximate center of the rodconverging toward those struck out from the opposite side of the centerof the rod. The disposition of these lugs is optional; the inclinationlikewise; the number is also, it being essential in all instances tosufficiently raise these spurs or lugs at such distances from the bottomwall of the channel-bar as will permit the cement to readily egressthrough the space formed by the displacement of these lugs for thepurpose of forming a key between the opposing portions of the cement onopposite sides of the said bottom wall 5.

I may also, as illustrated in Fig. 3 of the drawings, enlarge the sideflanges of the channel-bar to provide additional strengthening andbracing means in order to more readily permit of the tension-barsassuming a certain proportion of the static pressure of the composition.

Fig. 2 of the drawings illustrates the invention as applied to a wall,in which event it is desirable that all of the lugs incline upward. InFig. 3 of the drawings I have illustrated my invention as applied to ahollow column, wherein the core 9, as is well known in the art, istemporarily placed in position to form the hollow interior ot the columnwhile the cement is being applied in a plastic state, and which core issubsequently removed after the composition is in a hardened state,

It will be obvious from the foregoing that the essential feature of myinvention is the displacement of portions of the metal of which thetension-bar is formed at suitable intervals, this displacement forminglugs which permit of a more firm and secure adherence between theplastic composition and the tension-bar, as well as forming an aperturethrough which the cement may flow while in a plastic condition, and whenin a hardened state that portion of the cement extending within theaperture forming a key between the opposing faces of the plastic bodywith relation to the tension-bar, and I therefore do not wish to limitmyself to any particular form of bar, but reserve the right to alter thestructure to the extent of not departing from the spirit and scope of myinvention as falls within the appended claims.

Having now fully described my invention, What I claim as new, and desireto secure by Letters Patent, is

1. A tension-rod formed with side flanges, the portion of said rodbetween said flanges being formed with spurs struck out therefrom, saidspurs alternately projecting in opposite directions.

2. A tension-rod formed with side flanges the portion of said rodbetween said flanges being formed with two series of spurs struck outtherefrom, the spurs of one series being inclined in planes opposing thespurs of the other series.

In testimony whereof I have affixed my sig* nature in the presence oftwo witnesses.

JAMES B. HINGHMAN.

Witnesses:

XV. H. RENTON, F. BARTELs.

